Carriage-top prop



(Model.)

0. D. THATGHER.

-GARRIAGE TOP PROP No. 306,874. Patented oat. 21, 1884.

WITNESSES: I INVENTOR /JL2! M/@ V BY ,M a

ATTORNEYS.

UNITED STATES ATENT FFICE.

CHARLES D. THATGHER, OF COLUMBUS, ASSIGNOR, BY MESNE ASSIGNMENTS, OFONE-HALF TO FINLEY O. CUMMINGS AND JOHN (1- OHORPENNING,

BOTH .OF SPRINGFIELD, OHIO.

CARRIAGE-TOP PROP.'

SPECIFICATION forming part of Letters Patent No, 306,874, dated October21, 1884.

Application filed March 7, 1884. (Model.)

To aZZ whom, it may concern.-

Be it known that I, CHARLES D. THA'IOHER, of Columbus, in the county ofFranklin and State of Ohio. have invented a new and Im proved Top-Propfor Carriages'of which the following is a full, clear, and exact.description.

Reference is to be had to the accompanying drawings. forming part ofthis specification. in

which similar letters of reference indicate cor- LO responding parts inall the tigu res.

Figure l is a perspective view. showing the bolt and bow-plate detached.Fig. 2is a perspective of the bolt placed in the socket of thebow-plate, with the covering washer or cap detached. Fig. 3 is asectional elevation of the complete prop. Fig. 4 is a sectional planView of the same. taken on the line wxof Fig. 3; and Fig. 5 is aninverted plan view of the top-prop.

The invention consists, principally, ofatopprop so constructed that theemployment of screw-threads is dispensed with in connecting the boltwith the bow-plate.

The invention also consists of the construction. arrangement. andcombination of parts,

all as hereinafter described and claimed.

Referring to the drawings, A represents the bolt. B the how-plate, and Othe covering washer or cap. 0 at its outer end, as shown at a, toreceive a nut, in the ordinary manner. At itsinnerend the saidboltAisl'ormed with thelug a, which, together with the slot b andrecessI)", made in the bow plate B, and collar b thereof, forms a kind ofbayonet-joint for looking the said bolt A and plate B together. Abovethe lug a a distance equal to the height of the collar 1) the bolt A istermed with the flange a", which is made square on opposite sides, asshown at 4c a for the application to the bolt ofa wrench for turning thebolt when necessary, and this collar is notched out ot'line with the luga, as shown at a, to receive the locking-fin c'of the washeror cap 0,which fin, when the cap 0 is in place, enters also the slot 1) of thecollar 1), which prevents the bolt A and washer or The bolt A isscrew-threaded capC from turning, as will be understood from Fig. 3. Thebow-plate B is adapted to be secured to the bow of the carriage top byscrews passing through the screw-holes c and entering the bow in theordinary manner, and the recess b" is extended to one side of the lowerend of the slot 1), to form an offset, b at the lower edge of the collar1), under which offset the stud a fits, to form the lockwhen thebolt isput in place in the bow-plate B and turned to bring the notch ain flangea to coincide with the slot b made in the collar b. The bolt A havingbeen put in the bow-plate B and turned to the position shown in Fig. 2with the notch a standing in line with slot b, the washer or cap 0 is tobe put in place over the flange and collar of the bolt and bow-plate, asshown in Fig. 3, with theinternal fin, a, thereof entering the notch aand slot 1), which locks the bolt A from turning in the plate B, andthus causes the stud a, acting in connection with offset b, to securelylock the boltand bowplate together. In this manner it will be seen thatall tapping of the bow plate B and forming of screw-threads uponthelower end of the bolt A are avoided, and that the connection of thebolt with the plate is perfectly secure and reliable, and that the propis thus made cheaper and better than the common form of v prop.

Having th us described my invention, I claim as new and desire to secureby Letters Patent 1. The bow-plate B and bolt A, locked together bymeans of an offset and lug, substantially as and for the purposes setforth.

2. The bolt A, formed with lug a and flange a notched at a, .andbow-plate B, formed with collar b, slotted at b, and recessed toformoffset 1), in combination with the washer or cap 0, formed with thelocking-fin c, substantially as and for the purposes set forth.

CHARLES D. THATOHER.

Witnesses:

M. R. SHANK, JNo. F. OHORPENING.

